try{
       load0(res0);
       someCodeHere();
       load1(res1);
       someOtherCodeHere();
       load2(res2);
       yetAnotherCodeHere();
       load3(res3);
       andYetAnotherCodeHere();
    }
    catch(EType0 e0){
        throw new Exception("whatever happens lol", e0);
    }
    catch(EType1 e1){
        unload0(res0);
        throw new Exception("whatever happens lol", e1);
    }
    catch(EType2 e2){
        unload1(res1);
        unload0(res0);
        throw new Exception("whatever happens lol", e2);
    }
    catch(EType3 e3){
        unload2(res2);
        unload1(res1);
        unload0(res0);
        throw new Exception("whatever happens lol", e3);
    }
    unload3(res3);
    unload2(res2);
    unload1(res1);
    unload0(res0);